Federal Way vs Seattle
How do rainwater harvesting rules compare between Federal Way, WA and Seattle, WA?
Federal Way, WA
King County
Rainwater harvesting is legal and encouraged in Federal Way under RCW 36.89.080. Rain barrels and cisterns need no permit; indoor/plumbed systems require a permit under FWRC 13.22.
View full Federal Way rules →Seattle, WA
King County
No data available yet for Seattle.
Key Facts Comparison
| Fact | Federal Way | Seattle |
|---|---|---|
| Legal | Yes (RCW 36.89.080) | - |
| Rain Barrel Permit | Not required | - |
| Indoor System | Permit required | - |
| LID Credit | Available | - |
| Contact | SWM (253) 835-2700 | - |
Highlighted rows indicate differences between cities.
Federal Way FAQ
Can I set up a rain barrel in Federal Way?
Yes. Simple rooftop rain barrels for garden use are legal without a permit under RCW 36.89.080 and are actively encouraged by the city.
Do I need a permit to plumb a rainwater system into my house?
Yes. Potable or indoor plumbed systems must comply with FWRC 13.22 and the Uniform Plumbing Code, including backflow prevention. Apply through the Federal Way Permit Center.
Seattle FAQ
No FAQs available.
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